Archived App (Last seen on 4 Jul 2026)
This is an archived listing of the app previously available on the App Store.
Diagnose your V-Twin motorcycle issues yourself with this app. It provides circuit diagrams, DTC code explanations, and guided diagnostic paths to help you pinpoint problems and avoid costly dealership repairs. Save money and get back on the road faster.
1.2.0
May 23, 2026
This update is about cleaning up the UI for a more polished experience. The login experience has been rebuilt. If you don't have an active subscription, the app now takes you straight to the upgrade screen. If you're already subscribed, you'll see a clean logout option. The paywall has been simplified as well. The app icon has been redesigned. Brighter, bolder, and more visible on your home screen. Language across the app has been cleaned up and made consistent. Under the hood, a series of performance and reliability improvements have been applied based on a full code review. The app loads faster, handles edge cases more gracefully, and behaves more predictably across all supported devices. American V-Twin Diagnostics is built for riders who want to understand their machine — not just hand it over and hope for the best. Every update moves it closer to the tool you deserve.
MoreGarage profiles, Diagnostic records & Sharable PDF logs
American V-Twin Diagnostics supports over 80 sub-models, including Sportster, Dyna, Softail, Touring, and CVO models. It specifically handles Twin Cam and Evolution Sportster diagnostics and flags Magneti Marelli EFI models.
The app offers a free tier with essential diagnostic information. Premium features, including guided diagnostic paths and detailed reports, are available through a subscription for $9.99 per month, with a 3-day free trial.
Yes, the app provides a robust free version that includes circuit wiring diagrams, DTC code lookups, torque specifications, and service intervals without requiring a subscription.
No, American V-Twin Diagnostics does not require any external hardware, dongles, or adapters. It functions solely through your smartphone or tablet.
The app was last updated on May 23, 2026, with version 1.2.0. This indicates a recent update, suggesting ongoing development and support.
The Premium subscription unlocks guided diagnostic paths for all major systems, a comprehensive mechanic's checklist, motorcycle garage features for multiple bikes, PDF diagnostic reports, and service record logging.
Yes, the app is designed to help users understand diagnostic trouble codes in plain English and provides step-by-step guidance, making it accessible for those new to motorcycle diagnostics.
American V-Twin Diagnostics has an age rating of 4+, making it appropriate for a wide range of users.
